Disable IPV6 in Windows 2008 Server or Vista

Today while installing 2008 failover cluster, I got error or notification from SQL server that two of my servers have same IPV6 address. Because I don’t use IPV6 and I have disabled it in network properties it was a bit weird to see this message.

Then I run ipconfig command that showed to me lot of Tunnel adapters that were disconnected and created automatically by Vista.

So to have painfree installation of the new cluster I have disabled IPV6 protocol totally.